Wavelength correction control system for dye laser

The invention provides a wavelength correction control system for a dye laser. The system comprises the dye laser, a sample pool, a signal detection unit and a signal processing unit, wherein laser emitted by the dye laser is subjected to frequency multiplication by a beta-Ba2O4 crystal and then output, the laser output after frequency multiplication is split by a beam splitter and then enters the sample pool through an entrance window; the signal detection unit comprises a fluorescence collection lens of a narrowband filter and is used for filtering interference and focusing a fluorescence signal excited by laser, the fluorescence signal is acquired by a photomultiplier, and a laser energy signal is monitored by a photodiode. A signal acquisition card of the signal processing unit receives the signals acquired by the photomultiplier and the photodiode and transmits the signals to a computer, and the computer controls gratings of the dye laser and parameters of the beta-Ba2O4 crystal through a USB, so that th